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Proceedings of the IEEE

Issue 11 • Nov. 1967

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Displaying Results 1 - 25 of 77
  • [Front cover and table of contents]

    Publication Year: 1967, Page(s): c1
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    Freely Available from IEEE
  • Scanning the issue

    Publication Year: 1967, Page(s):1775 - 1786
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  • Computer methods of network analysis

    Publication Year: 1967, Page(s):1787 - 1801
    Cited by:  Papers (71)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1600 KB)

    In this tutorial paper, the influence of the computer not only on the modus operandi of circuit design, but also on network theory itself, is discussed. The topological properties of linear graphs are reviewed and a matrix-topological formulation of the network problem is described. In addition to the classical mesh, node, and cutset methods, a mixed method of analysis is described which is applic... View full abstract»

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  • Direct solutions of sparse network equations by optimally ordered triangular factorization

    Publication Year: 1967, Page(s):1801 - 1809
    Cited by:  Papers (393)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (877 KB)

    Matrix inversion is very inefficient for computing direct solutions of the large sparse systems of linear equations that arise in many network problems. Optimally ordered triangular factorization of sparse matrices is more efficient and offers other important computational advantages in some applications. With this method, direct solutions are computed from sparse matrix factors instead of from a ... View full abstract»

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  • Computer techniques for the frequency analysis of linear electrical networks

    Publication Year: 1967, Page(s):1810 - 1819
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (854 KB)

    A detailed exposition is presented of a computer program for evaluating frequency response characteristics in arbitrary, linear, lumped, electrical networks. The program is based on Branin's "link-at-a-time" algorithm, which is adapted for frequency domain analysis and extended to networks containing nonreciprocal elements by exploiting the close relationship between Branin's work and the reinforc... View full abstract»

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  • A fast reliable iteration method for dc analysis of nonlinear networks

    Publication Year: 1967, Page(s):1819 - 1826
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (807 KB)

    A new iteration method for nonlinear dc analysis, based on Broyden's modification of the Newton-Raphson method, is described. Broyden introduces a variable correction factor which is chosen so as to minimize, or at least reduce, the size of the error vector at each iteration. This completely precludes divergence of the algorithm. Broyden also develops a means for updating the inverse Jacobian matr... View full abstract»

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  • Matrix filtering as an aid to numerical integration

    Publication Year: 1967, Page(s):1826 - 1831
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (493 KB)

    Digital simulation of linear systems often is complicated by the simultaneous presence of "slow" and "fast" time constants (or of small and large eigenvalues). A procedure is described that simplifies the treatment of such systems. Roughly speaking, the procedure consists of separating the response into a "low-frequency" and a "high-frequency" component, calculating each component, and then adding... View full abstract»

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  • Computer-aided network optimization the state-of-the-art

    Publication Year: 1967, Page(s):1832 - 1863
    Cited by:  Papers (75)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2766 KB)

    Formal optimization procedures are destined to assume an increasingly useful role in network design. To form a basis for continued development, this paper summarizes the field by 1) presenting an extensive and detailed review of the optimization methods used in computer-aided network design and 2) giving state-of-the-art examples of iterative network design. View full abstract»

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  • Techniques for the optimal design and synthesis of switching circuits

    Publication Year: 1967, Page(s):1864 - 1877
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1274 KB)

    The variational approach to the optimal design of high-speed switching circuits is explored. The approach implements the variational calculus to obtain an expression for the vector sensitivity of a scalar performance function (e.g., delay, or switching time) to changes in the vector of design parameters. Gradient methods are established for using the vector sensitivity to iteratively update the pa... View full abstract»

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  • An optimization technique for real and reactive power allocation

    Publication Year: 1967, Page(s):1877 - 1885
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (685 KB)

    An economic schedule for real power generation is obtained by a Lagrangian method and the allocation of reactive power generation is determined by a gradient method. Alternate real and reactive power requirements for economic system operation are computed until the total cost is minimized within the limitations imposed by system constraints. Repeated solutions of the network equations are used to ... View full abstract»

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  • Optimization in engineering design

    Publication Year: 1967, Page(s):1885 - 1897
    Cited by:  Papers (22)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (971 KB)

    It is shown that many engineering design problems can be formulated in terms of inequality constraints on the system response function(s) and on the design parameters. Any set of design variables for which these constraints are satisfied constitutes an acceptable design. There may be many acceptable designs or none at all. In either case it is possible to define a best or optimal design in a meani... View full abstract»

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  • Computer-aided transistor design, characterization, and optimization

    Publication Year: 1967, Page(s):1897 - 1912
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1306 KB)

    A systematic and general method of computing ac and dc characteristics of double-diffused junction transistors using major process parameters such as dimensions of the device, surface concentration, junction depth, diffusion time, temperature, and diffusion coefficient as a function of temperature and impurity concentration is described. These parameters can be checked during the process and, ther... View full abstract»

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  • Development of mathematical models of semiconductor devices for computer-aided circuit analysis

    Publication Year: 1967, Page(s):1913 - 1920
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (699 KB)

    This paper describes the development and verification of mathematical models which will approximate the electrical characteristics of Zener and/or avalanche diodes and tunnel diodes. Each model consists of a circuit of discrete components with their defining equations. The equations are in a form compatible with the digital computer language which makes the models useful in analysis and design, by... View full abstract»

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  • Computer models of the field-effect transistor

    Publication Year: 1967, Page(s):1921 - 1929
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (790 KB)

    The use of general network analysis programs to analyze complex electronic circuits requires that valid models be developed for the active devices in these circuits. A nonlinear model of the field-effect transistor is presented for use in large-signal applications. From this model several piecewise-linear models suitable for use with an Electronic Circuit Analysis Program (ECAP) are derived. The a... View full abstract»

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  • Fully automated network design by digital computer: Preliminary considerations

    Publication Year: 1967, Page(s):1929 - 1939
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (898 KB)

    Fixed-structure lumped, linear, time-invariant RLC network design problems may be solved by means of the digital computer in terms of gradient techniques in parameter space. Formulation of the network constraint equations in such a way that the variable parameters enter linearly allows the extension of this computer-aided scheme to the design of networks of originally unknown structure. The feasib... View full abstract»

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  • The applicability of computer-aided design as a system engineering tool

    Publication Year: 1967, Page(s):1940 - 1945
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (593 KB)

    The morphology of design and the process of design are examined in an effort to establish a commonality between component and system design which would permit the expansion of design automation. The characteristics of a design problem that make it amenable to computer-aided design (CAD) are defined. The capabilities of CAD for the solution of these problems are analyzed and the difficulties facing... View full abstract»

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  • Computer-aided design of electronic circuits a user's viewpoint

    Publication Year: 1967, Page(s):1946 - 1954
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1016 KB)

    Computer-aided analysis of electronic circuits is examined from the standpoint of the user. A general discussion of program requirements is presented, and several numerical and practical aspects of computer-aided electronic circuit design are given. The engineer's role is discussed in terms of the information and insight needed by the user, and some of the methods utilized in developing computer a... View full abstract»

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  • OLCA: An on-line circuit analysis system

    Publication Year: 1967, Page(s):1954 - 1961
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (703 KB)

    An experimental software system for on-line analysis of linear networks is described. Inputs to the system such as circuit diagrams are given via the light pen and the teletypewriter of a remote graphical console. Analysis results are available in various forms, including console displays of frequency characteristics. The system provides close user supervision so that it is easy to use even for a ... View full abstract»

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  • An introduction to on-line circuit design

    Publication Year: 1967, Page(s):1961 - 1971
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1097 KB)

    This paper identifies and introduces in simple terms a broad view of on-line circuit design, which reflects the interrelation and relevance of several diverse areas such as network theory, linguistics, numerical analysis, programming systems, and on-line computation. Discussion is presented in terms of 1) the structure of on-line utlities, 2) requirements imposed by the interactional nature of on-... View full abstract»

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  • ACCEL: Automated circuit card etching layout

    Publication Year: 1967, Page(s):1971 - 1982
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1053 KB)

    Printed circuit board design time can be greatly reduced by the use of a computer program called ACCEL developed jointly by Sandia Corporation and the Thomas Bede Foundation under contract to Sandia. The ACCEL program designs printed circuit boards and proceduces the drawings for their construction. The program is designed to handle components with up to four leads each. The input is encoded from ... View full abstract»

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  • On-line graphics applied to layout design of integrated circuits

    Publication Year: 1967, Page(s):1982 - 1988
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1587 KB)

    A series of computer programs called CADIC has been developed to assist in the layout desigm of integrated circuits. The CADIC system (Computer-Aided Design of Integrated Circuits) is a man-machine system that takes full advntage of human judgment, while relieving the man of much routine work. View full abstract»

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  • A discretionary wiring system as the interface between design automation and semiconductor array manufacture

    Publication Year: 1967, Page(s):1988 - 1997
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (834 KB)

    The trend toward computer-aided design, with its resulting increased complexity and specialized circuitry, places particular emphasis on methods of translating design ideas into hardware. In present integrated circuit structures this is accomplished by an iterative process involving both materials pcocessing and geometrical variations. Because of the large number of similar devices being processed... View full abstract»

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  • Efficient matrix techniques applied to transmission tower design

    Publication Year: 1967, Page(s):1997 - 2000
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Self-supporting transmission towers are highly indeterminate structures. Until recently, analysis of such structures was accomplished by determinate methods due to the number of calculations involved in indeterminate methods. Results from the former were often questionable because elastic properties of members were not considered. Today, large numerical problems are being solved with high-speed di... View full abstract»

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  • An experiment in computer-aided education

    Publication Year: 1967, Page(s):2001 - 2005
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (695 KB)

    Digital computers have had a significant effect on engineering practice, but they have not yet had a comparable effect on educational methods, primarily because of a lack of convenient man-machine communication capabilities. However, during recent years substantial strides have been taken in making the digital computer more responsive and easier to use with natural "problem-oriented" languages and... View full abstract»

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  • What is CADAR?

    Publication Year: 1967, Page(s): 2006
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    Freely Available from IEEE

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North Carolina State University